Explosive-engine.



F. J. GREMEL.

EXPLOSIVE ENGINE.

APPLICATION IIL'BD MAR. 14, 1910.

Patented Apr. 9, 1912.

FRANK J .GREMEL COLUMBIA PLANOGRAPM cu., WASHINGTON. u. C.

F..J. GREMEL.

EXPLOSIVE ENGINE.

APPLIUATION FILED MAR. 14, 1910.

Patented A r. 9, 1912.

2 SHEETSSHEET 2.

3mm FRANK J -GREMEL WWI/M20600 STES AT FFCE.

EXPLOSWE-ENGINE.

To all whom it may concern:

Be it known that I, FRANK J. GREMEL, a citizen of the United States ofAmerica, residin at Detroit, in the county of Wayne and gtate ofMichigan, have invented certain new and useful Improvements inplosive-Engines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to explosive engines, and more particularly to anarrangement of the parts thereof which greatly simplifies theconstruction and reduces the weight per horsepower.

The invention consists in the matters hereinafter set forth, and moreparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a view partly in front elevation and partlyin section, of an engine that embodies the invention; Fig. 2 is a view,partly in elevation and partly in section, of the crank case side of acylinder; and Fig. 3 is a view in elevation of the valve side of theengine.

Referring to the drawings a pair of cylinders 1 are each closed at thelower end, and are each formed in one piece with laterally extendingbase and crank case walls 2, which when united along their margins 3 bybolts 4 or the like, hold the cylinders in parallel relation and form acomplete housing. A cap or head 5 is removably secured on the open endof each cylinder. A cylindrical piston 6 with packing rings 7 or thelike near each extremity, is provided for each cylinder. Wrist pins 8extend radially from the center of each piston, through guide slots inthe cylinder wall into the housing, and their outer ends are pivoted orother wise secured to guide blocks 9 which travel in guide ways 10formed in webs 11 spanning the outer, upper part of each half casing orhousing. Each wrist pin is coupled by a connecting rod 12 to an adjacentcrank pin 13 of a main shaft 14. The latter is journaled in a bushing 15inserted in the cylinder extensions.

A valve cam-shaft 16 is journaled on the cylinders, the casing wallsbeing interrupted and extending outwardly to receive a cover plate 17.At each end of the cylinders properly disposed valve seats, one of whichis indicated at 18, have closures 19 on tappet stems 20 with closingsprings 21 thereon, a single cam 22 for each cylinder reciprocat-Specification of Letters Patent.

Application filed March 14, 1910.

Patented Apr. 9, 1912.

Serial No. 549,321.

ing the adjacent tappets alternately at each end thereof.

A single cover plate 23 is secured against the outer 'margins of thecasing walls 2. An intake opening 24: in the outer face of this plate inwhich a carburetor or other source of fuel supply may be secured, isconnected by ducts 25 in the plate with the intake of the severalcylinders. A manifold pipe 26 likewise integrally formed on the coverplate has intakes 27 severally registering with the exhaust ports of thecylinders. If the cylinders are water-jacketed, as herein indicated, awater supply pipe 28 is formed integrally on.or secured to the coverplate with openings indicated at 29 into the cylinder jackets.

All the moving parts, including the cam shaft, cams, and tappets, arethoroughly lubricated by oil splashed up by the cranks, the base forminga reservoir which may be drained by removal of a suitable screw-plug 30or the like. As the cover plate is close to the cylinders, a carburetormounted thereon and connected to the intakes, is kept warm by thecylinders, thereby increasing its efiiciency. As the cranks turn betweenthe lower ends of the cylinders, it reduces the height of the motor andmakes it very compact.

A very simple, easily assembled motor is thus obtained which completelyhouses the cranks without a separate or attached crankcase.

Obviously, the details of construction may be varied without departingfrom the spirit of the invention and I do not care to limit myself toany particular form or arrangement of parts.

What I claim is:

1. In a mot-or, cylinders closed at each end and provided at each endwith intake and exhaust ports, a wall on one cylinder detachably-securedat its margin to a mating wall on the companion cylinder, formingtherewith a base and crank shaft housing, a piston in each cylinder, awrist pin extending from each piston through alongitudinal slot in thecylinder and sliding in guide-ways on the wall, and a crank shaftjournaled in the walls and coupled operatively to each wrist pin.

2. In a motor, cylinders closed at each end and provided at each endwith intake and exhaust ports, a wall on one cylinder a crank shaftjournaled in the walls, and a connecting rod coupling each wrist pinwith the crank shaft, the walls forming a housing and crank shaft base.

3. In a motor, cylinders closed at each end and provided at each endwith intake and exhaust port-s, a wall on one cylinderdetachably-secured at its margin to a mating wall on the companioncylinder, forming therewith a base and crank shaft housing, a piston ineach cylinder, a wrist pin extending from each piston through a longitudinal slot in the cylinder and sliding in guide-ways on the wall, acrank shaft journaled in the walls and coupled operatively to each wristpin, and a cover plate detachably secured over an opening formed in themating walls and provided with an inlet manifold opening into theseveral intake ports, and an exhaust manifold connecting the severalexhaust ports.

4. In a motor, cylinders closed at each end and provided at each endwith intake and exhaust ports, and with water jacketed walls, a wall onone cylinder detachablysecured at its margin to a mating wall on thecompanion cylinder, forming therewith a base and crank shaft housing apiston in each cylinder, a wrist pin extending from each piston througha longitudinal slot in the cylinder and sliding in guide-ways on thewall, a crank-shaft journaled in the walls and coupled operatively toeach wrist pin, and a cover plate detachably-secured over an openingformed in the mating walls and provided with an inlet manifold openinginto the several intake ports, and an exhaust manifold connecting theseveral eX- haust ports and with a water pipe discharging into the waterjacket.

5. In a motor, cylinders closed at each end and provided at each endwith intakeand exhaust ports, a wall on one cylinder detachably-securedat its margin to a mating wall on a companion cylinder, extending belowthe cylinder ends and forming with the mating wall a base and crankshaft housing, a'piston in each cylinder, a wrist pin extending-fromeach piston through a longitudinal slot in the cylinder and sliding inguide-ways on the wall, a crank shaft j ournaled in the housing adjacentthe lower end of the cylinder with its cranks playing between the lowerends of the cylinder, and connecting rods each coupling a wrist pin withan adjacent crank.

In testimony whereof I affix my signa-' ture in presence of twowitnesses.

FRANK J. GREMEL. l/Vitnesses:

OTTO F. BARTHEL, G. E. MGGRANN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

